Rasmus Villemoes
10a356629a
The %.20d specifier was introduced in 2d738a0aee ("profile/systemd-osc-context:
Enforce length limits"). But, for numeric conversions, the precision is not an
upper bound, but rather a lower bound on the output width, padding as necessary
with 0 on the left. So as-is, this does not in fact limit the output to at most
20 characters.
Of course, in practice, pids on linux are never greater than 2^22, and
certainly never larger than what would fit in a 20-digit decimal. On the other
hand, that more or less guarantees that the pid= field is always emitted with
12+ leadings zeroes, which is a bit silly. Moreover, a leading 0 can cause a
parser to treat it as octal.
Since $$ does expand to the PID in decimal, just print that as a string, with the
enforced 20 character limit.
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